John Bigelow Hartman, DDS
Periodontics · San Francisco, CA
John Bigelow Hartman, DDS is a periodontics with a practice address in San Francisco, California, and NPI 1376832337, issued on Mar 30, 2011. Check the license (California 21584, as entered in NPPES) with the California board that licenses this profession; the federal record below is the public data PlainDoctor holds for this provider.
- Name
- John Bigelow Hartman
- Credential
- DDS
- Primary taxonomy
- Periodontics 1223P0300X
- License number
- 21584 CA
Self-reported in NPPES; status is on the state search - Practice location
- 685 Commercial St, San Francisco, CA 94111
- Phone
- (415) 421-0550
- Enumerated
- Mar 30, 2011
- Record last updated
- Mar 30, 2011 (not updated in 15 years: call before relying on the address or phone)
- Fax
- (415) 421-1097
- Entity
- Type 1 · individual
8 nearest periodontics records → All 929 in California → Look up another NPI →
Verify John Bigelow Hartman in five checks
- 1IdentityNPI record in CMS NPPESNPI lookupConfirmed in NPPES
- 2LicenseActive license and public ordersWhich California board licenses this profession
Search for license 21584Check the board - 3Other statesLicenses and actions elsewhereDocInfo (FSMB)Not checked
- 4ExclusionsMedicare and Medicaid bansHHS-OIG exclusion listNot checked
- 5CertificationBoard certificationABMS AOA NCCPA AANPNot checked
John Bigelow Hartman among 929 periodontics records in California
John Bigelow Hartman, DDS is one of 929 periodontics records with a practice address in California. 69% of them appear in a Medicare file (Part D prescribing, MIPS, Open Payments or Medicare group billing); this one does not. Its NPI, issued in 2011, is newer than 72% of them.
- NPI issued2011 · 72% of these records are older, 25% newer
- In a Medicare fileNo · 69% of these records are
- In the CMS Doctors and Clinicians fileNo · under 1% of these records are
- Record last updated2011 · 78% of these records were not updated in five years or more
Source: CMS NPPES, file of Aug 9, 2026, every record with primary taxonomy 1223P0300X and a California practice address; Medicare files: CMS Part D Prescribers 2024, MIPS 2023, Open Payments 2024, Doctors and Clinicians (data.cms.gov).
Periodontics providers in California
There are 929 periodontics records in California. No Medicare prescribing, quality score, industry payment or hospital affiliation is published for this NPI.
All 929 in California → Every provider in San Francisco → Periodontics nationwide →
The 8 periodontics records with the nearest ZIP codes
- Hyewon Chung, DDS, MMSCSan Francisco, CA 941111487902136
- Zahra Falsafi, DMDSan Francisco, CA 941111548327877
- John Mazza, DDSSan Francisco, CA 941101497704753
- Kuo Tong Sun, DMDSan Francisco, CA 941101942318167
- Bruce Hiura, DDSSan Francisco, CA 941091114940921
- Jacqueline Wong, D.M.D., M.M.SC.San Francisco, CA 941091962616235
- Thomas Baker, D.D.SSan Francisco, CA 941081760682074
- Eric Engert, DMD,MSDSan Francisco, CA 941081801095104
Common questions
What is John Bigelow Hartman, DDS's NPI number?
John Bigelow Hartman, DDS's National Provider Identifier (NPI) is 1376832337, issued on Mar 30, 2011. An NPI identifies a provider in billing; it is not a license.
Where is John Bigelow Hartman, DDS located?
The NPPES record lists a practice address at 685 Commercial St, San Francisco, CA, 94111. Phone: (415) 421-0550. Providers update this record themselves, so call before visiting.
How can I verify John Bigelow Hartman, DDS's license?
NPPES lists California license number 21584, as entered by the provider. Search the California board that licenses this profession; the NPPES record confirms identity only.
Source: CMS National Plan and Provider Enumeration System (NPPES), file of Aug 9, 2026 (NPPES files on CMS.gov); NUCC Health Care Provider Taxonomy. An NPI identifies who bills; it is not a license.
Figures on PlainDoctor are read from the federal files each page names (CMS NPPES, Medicare Part D, MIPS, Open Payments; the HHS-OIG exclusion list only as counts) and from Census population estimates, with the file date shown beside them. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error. Data current as of Aug 9, 2026.